CVE-2026-54100 HIGH

CVE-2026-54100: Windows-machine-config-operator: windows-machine-config-operator: ssh host key not verified enables credential theft

Vendor Red Hat
Product Red Hat OpenShift Container Platform 4
Weakness CWE-295
Published June 22, 2026
Last update June 30, 2026

CVSS base score

8.3/10
Attack vector Adjacent
Attack complexity High
Privileges required None
User interaction None
Confidentiality High
Integrity High

CVSS vector

CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:H

What the vulnerability does

01Description

A flaw was found in the Windows Machine Config Operator (WMCO) for Red Hat OpenShift Container Platform. WMCO establishes SSH connections to Windows worker nodes without verifying the remote server host key. An adjacent-network attacker who can intercept or redirect WMCO's SSH session can capture WICD and kubelet bootstrap credentials transferred during node configuration, enabling compromise of Windows node identities in the cluster.

Key dates

02Disclosure timeline

June 22, 2026 CVE published
June 30, 2026 Record updated